Shelf holder



FIG. 1 is a front elevation of a shelf holder showing our new design;

FIG. 2 is a top plan view of the shelf holder;

FIG. 3 is a bottom view of the shelf holder;

FIG. 4 is a front perspective view of the shelf holder, from one side; and,

FIG. 5 is a side view of the shelf holder, from the other side.

The undisclosed rear view is planar and unornamented. 

The ornamental design for a shelf holder, as shown. 